Move psl_matching_helper to the password manager component

BUG=334662
R=blundell@chromium.org
TBR=gcasto@chromium.org

Review URL: https://codereview.chromium.org/149743005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249001 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249001